Measurement E151M1376

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.0537
Q²:	0.0291 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.6928

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-0.7299	0.8318
0.25	54.0	1.0202	0.9476
0.35	30.0	1.0042	1.0086
0.35	42.0	1.1763	0.7028
0.35	54.0	-0.888	0.7229
0.35	66.0	0.8489	1.0415
0.45	30.0	0.9729	0.7989
0.45	42.0	0.4279	0.6629
0.45	54.0	-1.0154	0.6297
0.45	234.0	1.1564	0.9297
0.45	246.0	1.0306	0.7167
0.45	258.0	-0.5546	0.894
0.55	30.0	-0.2271	0.9077
0.55	42.0	0.5507	0.6873
0.55	54.0	-1.2113	0.6988
0.55	150.0	-0.6659	0.9255
0.55	222.0	-0.7224	0.6918
0.55	234.0	-0.2216	0.6815
0.55	246.0	0.2987	0.5821
0.55	258.0	-0.3748	0.6664
0.65	138.0	1.8941	0.7914
0.65	150.0	-0.2463	0.7851
0.65	162.0	-0.256	0.7936
0.65	174.0	-0.1182	0.893
0.65	186.0	-0.7905	0.873
0.65	210.0	-0.1366	0.7927
0.65	222.0	-0.3185	0.6142
0.65	234.0	-0.4973	0.5384
0.65	246.0	0.5183	0.5008
0.65	258.0	-0.418	0.6181
0.65	270.0	-1.0787	0.7019
0.75	138.0	0.0603	0.772
0.75	150.0	0.2549	0.8255
0.75	162.0	-0.5299	0.7864
0.75	174.0	-0.3991	0.8314
0.75	186.0	1.3953	0.8598
0.75	222.0	-0.3052	0.676
0.75	234.0	-0.5781	0.4961
0.75	246.0	-0.0697	0.5162
0.75	258.0	0.6412	0.5659
0.75	270.0	-0.5898	0.8474
0.85	138.0	0.0364	0.9421
0.85	222.0	1.3973	0.656
0.85	234.0	-0.2316	0.5813
0.85	246.0	0.1876	0.4746
0.85	258.0	0.2746	0.5293
0.85	270.0	-0.0202	0.7436
0.95	258.0	0.0047	0.7072

CLAS Physics Database